Experimental studies of the collateral circulation in the head and neck of sheep (Ovis aries).
D000367:Age Factors; D000818:Animals; D001158:Arteries / Q000033:anatomy & histology; D002339:Carotid Arteries / Q000033:anatomy & histology*; D002341:Carotid Artery Thrombosis; D003097:Collateral Circulation; D006257:Head / Q000098:blood supply*; D009333:Neck / Q000098:blood supply*; D012756:Sheep